diff --git a/README.md b/README.md
index 12a49d5..42e0d62 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,7 @@
 # learn_audio
 
-A repo dedicated to audio experiments
\ No newline at end of file
+A repo dedicated to audio experiments
+
+# Requirements
+
+One the Ubuntu raspberrypi 20.04 server I needed to have `sudo apt-get install libasound2-dev` installed before run `pip install -r requirements.txt`.
diff --git a/requirement.in b/requirements.in
similarity index 100%
rename from requirement.in
rename to requirements.in
diff --git a/requirement.txt b/requirements.txt
similarity index 100%
rename from requirement.txt
rename to requirements.txt
diff --git a/socket_send_recieve/sender.py b/socket_send_recieve/sender.py
index 3ee8dfa..4a44160 100644
--- a/socket_send_recieve/sender.py
+++ b/socket_send_recieve/sender.py
@@ -12,7 +12,7 @@ wave_file_path = sys.argv[1]
 if not wave_file_path.endswith('.wav'):
     raise ValueError("File must have .wav file extension.")
 
-(HOST,PORT)=('localhost',9000)
+(HOST,PORT)=('rospi.runcible.io',9000)
 s=socket.socket(socket.AF_INET,socket.SOCK_STREAM); s.connect((HOST,PORT))
 
 with open(wave_file_path, 'rb') as wave_file: